🔢 Digit Sum Calculator
Calculate sum of all digits
How to Use This Calculator
1
Enter a Number
Type any number.
2
Get Digit Sum
See sum of all digits.
About Digit Sum Calculator
The Digit Sum Calculator sums all digits in a number. Useful for checksum and digital root.
When to Use This Calculator
- Number Theory: Digital properties
- Checksums: Verify data
Why Use Our Calculator?
- ✅ Instant Results: Calculate quickly
- ✅ Educational: Learn digit sums
- ✅ Completely Free: No registration required
Frequently Asked Questions
What is digit sum?
Digit sum adds all digits of a number. For 123, digit sum = 1 + 2 + 3 = 6.